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气候指数对阿卡拉曼羊从出生到繁殖的生长值的影响

Çağrı Melikşah Sakar¹

¹International Center for Livestock Research and Training, Ankara, Turkey. melikksahi@gmail.com.

Tropical animal health and production

|January 25, 2024

概括

这项研究发现,虽然寒冷的天气并没有对羔羊生长产生负面影响,但热应激显著降低了阿卡拉曼羊的活体重和平均每日收益. 最佳舒适条件对于绵羊的发育至关重要.

科学领域:

动物科学动物科学
农业气候学农业气候学
畜牧业生产畜牧业生产

背景情况:

动物的生长和表现受农业气候条件的影响,热舒适度在适应性中起着关键作用.
了解气候对绵羊品种的影响对于优化土耳其等地区的生产至关重要.

研究的目的:

调查综合气候指数 (CCI) 对阿卡拉曼羊羔活体重 (LW) 和平均每日增量 (ADG) 的影响.
确定热舒适度的极限及其对从出生到18个月的羊生长的影响.

主要方法:

收集了来自土耳其 (2018-2020) Çankırı 16 个农场的 1011 只 Akkaraman 羊羔的活体重和平均每日增益数据.
分析了每天的综合气候指数 (CCI) 值,将热舒适度分为寒冷 (≤5°C),舒适 (5-25°C) 和温暖 (≥25°C) 的范围.
与不同年龄段 (出生至18个月) 的羔羊生长参数相关的CCI值.

主要成果:

羊羔在出生-3个月期间的77.7%,在12-18个月期间的50.1%经历了舒适的条件.
在3-6个月期间,72.2%的羊羔超过了温暖压力值,而在6-12个月期间,54.7%的羊羔超过了寒冷压力值.
在6-12个月期间,CCI值 (≥5°C) 的增加对羔羊活体重产生了负面影响;温暖的条件通常会对生长产生负面影响,而寒冷的条件则不会.

结论:

综合气候指数 (CCI) 的值显著影响阿卡拉曼羊羔的生长和发育.
温暖的气候条件比寒冷的条件对羊羔的生长构成更大的威胁,需要管理策略来减轻热应激.
保持热舒适度对于最大限度地提高绵羊生产的生长性能至关重要.

关键词:

出生的体重出生时的体重.气候指数气候指数增长的增长增长的增长羊羔羊羔羊羔的羊羔热舒适度可以提供热舒适度.

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